<template>
  <div class="register-container">
    <el-form ref="registerForm" :model="registerForm" :rules="registerRules" class="register-form" autocomplete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">用户注册</h3>
      </div>

      <el-form-item prop="fullName">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="fullName"
          v-model="registerForm.fullName"
          placeholder="真实姓名"
          name="fullName"
          type="text"
          tabindex="1"
          autocomplete="on"
        />
      </el-form-item>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="registerForm.username"
          placeholder="手机号"
          name="username"
          type="text"
          tabindex="2"
          autocomplete="on"
        />
      </el-form-item>

      <el-form-item prop="email">
        <span class="svg-container">
          <svg-icon icon-class="email" />
        </span>
        <el-input
          ref="email"
          v-model="registerForm.email"
          placeholder="邮箱"
          name="email"
          type="email"
          tabindex="3"
          autocomplete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="registerForm.password"
            :type="passwordType"
            placeholder="密码"
            name="password"
            tabindex="4"
            autocomplete="on"
            @keyup.native="checkCapslock"
            @blur="capsTooltip = false"
          />
        </el-tooltip>
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-form-item prop="confirmPassword">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="confirmPasswordType"
          ref="confirmPassword"
          v-model="registerForm.confirmPassword"
          :type="confirmPasswordType"
          placeholder="确认密码"
          name="confirmPassword"
          tabindex="5"
          auto-complete="on"
          @keyup.native="checkCapslock"
          @blur="capsTooltip = false"
          @keyup.enter.native="handleRegister"
        />
        <span class="show-pwd" @click="showConfirmPwd">
          <svg-icon :icon-class="confirmPasswordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleRegister">注册</el-button>

      <div class="tips">
        <span>已有账号？</span>
        <el-button type="text" @click="goToLogin">立即登录</el-button>
      </div>
    </el-form>
  </div>
</template>

<script>
export default {
  name: 'Register',
  data() {
    const validateFullName = (rule, value, callback) => {
      if (value.length < 2) {
        callback(new Error('姓名不能少于2位'))
      } else {
        callback()
      }
    }
    const validateUsername = (rule, value, callback) => {
      if (value.length < 3) {
        callback(new Error('用户名不能少于3位'))
      } else {
        callback()
      }
    }
    const validateEmail = (rule, value, callback) => {
      const emailRegex = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/
      if (!emailRegex.test(value)) {
        callback(new Error('请输入有效的邮箱地址'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码不能少于6位'))
      } else {
        callback()
      }
    }
    const validateConfirmPassword = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请再次输入密码'))
      } else if (value !== this.registerForm.password) {
        callback(new Error('两次输入的密码不一致'))
      } else {
        callback()
      }
    }
    return {
      registerForm: {
        fullName: '',
        username: '',
        email: '',
        password: '',
        confirmPassword: ''
      },
      registerRules: {
        fullName: [{ required: true, trigger: 'blur', validator: validateFullName }],
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        email: [{ required: true, trigger: 'blur', validator: validateEmail }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }],
        confirmPassword: [{ required: true, trigger: 'blur', validator: validateConfirmPassword }]
      },
      passwordType: 'password',
      confirmPasswordType: 'password',
      capsTooltip: false,
      loading: false,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  mounted() {
    if (this.registerForm.fullName === '') {
      this.$refs.fullName.focus()
    }
  },
  methods: {
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    showConfirmPwd() {
      if (this.confirmPasswordType === 'password') {
        this.confirmPasswordType = ''
      } else {
        this.confirmPasswordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.confirmPassword.focus()
      })
    },
    handleRegister() {
      this.$refs.registerForm.validate(valid => {
        if (valid) {
          this.loading = true

          // 使用API注册并自动登录
          this.$store.dispatch('user/register', this.registerForm)
            .then(() => {
              // 注册成功后直接登录
              const loginData = {
                username: this.registerForm.username,
                password: this.registerForm.password
              }
              return this.$store.dispatch('user/login', loginData)
            })
            .then(() => {
              // 获取用户信息成功后跳转到首页或重定向页面
              this.$router.push({ path: this.redirect || '/' })
            })
            .catch((_error) => {
              this.loading = false
              // 错误消息已经在request.js中处理了，这里只需要关闭loading
            })

          // 或者使用API直接调用
          // import { register } from '@/api/register'
          // register(this.registerForm)
          //   .then(() => {
          //     this.$message.success('注册成功')
          //     this.$router.push({ path: '/login' })
          //   })
          //   .catch(() => {
          //     this.loading = false
          //   })
        } else {
          console.log('表单验证失败')
          return false
        }
      })
    },
    goToLogin() {
      this.$router.push({ path: '/login' })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .register-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.register-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.register-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .register-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;
    text-align: center;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
